This specification covers an aluminum alloy in the form of
extruded bars, rods, wire, profiles, and tubing.

These extrusions have been used typically for parts subject to
excessive warpage during machining due to residual stresses and for
parts requiring high strength and whose fabrication does not
normally involve welding, but usage is not limited to such
applications.

Certain processing procedures may cause these extrusions to be
susceptible to stress-corrosion cracking; SAE ARP 823 recommends
practices to minimize such conditions.

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